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openvpn-gui/proxy.c

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/*
* OpenVPN-GUI -- A Windows GUI for OpenVPN.
*
* Copyright (C) 2004 Mathias Sundman <mathias@nilings.se>
* 2011 Heiko Hund <heikoh@users.sf.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program (see the file COPYING included with this
* distribution); if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define WINVER 0x0500
#include <windows.h>
#include <prsht.h>
#include <tchar.h>
#include <wininet.h>
#include "config.h"
#include "main.h"
#include "options.h"
#include "registry.h"
#include "proxy.h"
#include "openvpn-gui-res.h"
#include "localization.h"
#include "manage.h"
#include "openvpn.h"
extern options_t o;
INT_PTR CALLBACK
ProxySettingsDialogFunc(HWND hwndDlg, UINT msg, WPARAM wParam, UNUSED LPARAM lParam)
{
HICON hIcon;
LPPSHNOTIFY psn;
switch (msg)
{
case WM_INITDIALOG:
hIcon = LoadLocalizedIcon(ID_ICO_APP);
if (hIcon)
{
SendMessage(hwndDlg, WM_SETICON, (WPARAM) (ICON_SMALL), (LPARAM) (hIcon));
SendMessage(hwndDlg, WM_SETICON, (WPARAM) (ICON_BIG), (LPARAM) (hIcon));
}
/* Limit Port editbox to 5 chars. */
SendMessage(GetDlgItem(hwndDlg, ID_EDT_PROXY_PORT), EM_SETLIMITTEXT, 5, 0);
LoadProxySettings(hwndDlg);
break;
case WM_COMMAND:
switch (LOWORD(wParam))
{
case ID_RB_PROXY_OPENVPN:
if (HIWORD(wParam) == BN_CLICKED)
{
EnableWindow(GetDlgItem(hwndDlg, ID_RB_PROXY_HTTP), FALSE);
EnableWindow(GetDlgItem(hwndDlg, ID_RB_PROXY_SOCKS), FALSE);
EnableWindow(GetDlgItem(hwndDlg, ID_EDT_PROXY_ADDRESS), FALSE);
EnableWindow(GetDlgItem(hwndDlg, ID_EDT_PROXY_PORT), FALSE);
EnableWindow(GetDlgItem(hwndDlg, ID_TXT_PROXY_ADDRESS), FALSE);
EnableWindow(GetDlgItem(hwndDlg, ID_TXT_PROXY_PORT), FALSE);
}
break;
case ID_RB_PROXY_MSIE:
if (HIWORD(wParam) == BN_CLICKED)
{
EnableWindow(GetDlgItem(hwndDlg, ID_RB_PROXY_HTTP), FALSE);
EnableWindow(GetDlgItem(hwndDlg, ID_RB_PROXY_SOCKS), FALSE);
EnableWindow(GetDlgItem(hwndDlg, ID_EDT_PROXY_ADDRESS), FALSE);
EnableWindow(GetDlgItem(hwndDlg, ID_EDT_PROXY_PORT), FALSE);
EnableWindow(GetDlgItem(hwndDlg, ID_TXT_PROXY_ADDRESS), FALSE);
EnableWindow(GetDlgItem(hwndDlg, ID_TXT_PROXY_PORT), FALSE);
}
break;
case ID_RB_PROXY_MANUAL:
if (HIWORD(wParam) == BN_CLICKED)
{
EnableWindow(GetDlgItem(hwndDlg, ID_RB_PROXY_HTTP), TRUE);
EnableWindow(GetDlgItem(hwndDlg, ID_RB_PROXY_SOCKS), TRUE);
EnableWindow(GetDlgItem(hwndDlg, ID_EDT_PROXY_ADDRESS), TRUE);
EnableWindow(GetDlgItem(hwndDlg, ID_EDT_PROXY_PORT), TRUE);
EnableWindow(GetDlgItem(hwndDlg, ID_TXT_PROXY_ADDRESS), TRUE);
EnableWindow(GetDlgItem(hwndDlg, ID_TXT_PROXY_PORT), TRUE);
}
break;
case ID_RB_PROXY_HTTP:
if (HIWORD(wParam) == BN_CLICKED)
{
SetDlgItemText(hwndDlg, ID_EDT_PROXY_ADDRESS, o.proxy_http_address);
SetDlgItemText(hwndDlg, ID_EDT_PROXY_PORT, o.proxy_http_port);
}
break;
case ID_RB_PROXY_SOCKS:
if (HIWORD(wParam) == BN_CLICKED)
{
SetDlgItemText(hwndDlg, ID_EDT_PROXY_ADDRESS, o.proxy_socks_address);
SetDlgItemText(hwndDlg, ID_EDT_PROXY_PORT, o.proxy_socks_port);
}
break;
}
break;
case WM_NOTIFY:
psn = (LPPSHNOTIFY) lParam;
if (psn->hdr.code == (UINT) PSN_KILLACTIVE)
{
SetWindowLongPtr(hwndDlg, DWLP_MSGRESULT, (CheckProxySettings(hwndDlg) ? FALSE : TRUE));
return TRUE;
}
else if (psn->hdr.code == (UINT) PSN_APPLY)
{
SaveProxySettings(hwndDlg);
SetWindowLongPtr(hwndDlg, DWLP_MSGRESULT, PSNRET_NOERROR);
return TRUE;
}
break;
case WM_CLOSE:
EndDialog(hwndDlg, LOWORD(wParam));
return TRUE;
}
return FALSE;
}
/* Check that proxy settings are valid */
int
CheckProxySettings(HWND hwndDlg)
{
if (IsDlgButtonChecked(hwndDlg, ID_RB_PROXY_MANUAL) == BST_CHECKED)
{
TCHAR text[100];
BOOL http = (IsDlgButtonChecked(hwndDlg, ID_RB_PROXY_HTTP) == BST_CHECKED);
GetDlgItemText(hwndDlg, ID_EDT_PROXY_ADDRESS, text, _tsizeof(text));
if (_tcslen(text) == 0)
{
/* proxy address not specified */
ShowLocalizedMsg((http ? IDS_ERR_HTTP_PROXY_ADDRESS : IDS_ERR_SOCKS_PROXY_ADDRESS));
return 0;
}
GetDlgItemText(hwndDlg, ID_EDT_PROXY_PORT, text, _tsizeof(text));
if (_tcslen(text) == 0)
{
/* proxy port not specified */
ShowLocalizedMsg((http ? IDS_ERR_HTTP_PROXY_PORT : IDS_ERR_SOCKS_PROXY_PORT));
return 0;
}
long port = _tcstol(text, NULL, 10);
if ((port < 1) || (port > 65535))
{
/* proxy port range error */
ShowLocalizedMsg((http ? IDS_ERR_HTTP_PROXY_PORT_RANGE : IDS_ERR_SOCKS_PROXY_PORT_RANGE));
return 0;
}
}
return 1;
}
void
LoadProxySettings(HWND hwndDlg)
{
/* Set Proxy type, address and port */
if (o.proxy_type == http)
{
CheckRadioButton(hwndDlg, ID_RB_PROXY_HTTP, ID_RB_PROXY_SOCKS, ID_RB_PROXY_HTTP);
SetDlgItemText(hwndDlg, ID_EDT_PROXY_ADDRESS, o.proxy_http_address);
SetDlgItemText(hwndDlg, ID_EDT_PROXY_PORT, o.proxy_http_port);
}
else if (o.proxy_type == socks)
{
CheckRadioButton(hwndDlg, ID_RB_PROXY_HTTP, ID_RB_PROXY_SOCKS, ID_RB_PROXY_SOCKS);
SetDlgItemText(hwndDlg, ID_EDT_PROXY_ADDRESS, o.proxy_socks_address);
SetDlgItemText(hwndDlg, ID_EDT_PROXY_PORT, o.proxy_socks_port);
}
/* Set Proxy Settings Source */
if (o.proxy_source == config)
{
SendMessage(GetDlgItem(hwndDlg, ID_RB_PROXY_OPENVPN), BM_CLICK, 0, 0);
}
else if (o.proxy_source == windows)
{
SendMessage(GetDlgItem(hwndDlg, ID_RB_PROXY_MSIE), BM_CLICK, 0, 0);
}
else if (o.proxy_source == manual)
{
SendMessage(GetDlgItem(hwndDlg, ID_RB_PROXY_MANUAL), BM_CLICK, 0, 0);
}
}
void
SaveProxySettings(HWND hwndDlg)
{
HKEY regkey;
DWORD dwDispos;
TCHAR proxy_source_string[2] = _T("0");
TCHAR proxy_type_string[2] = _T("0");
/* Save Proxy Settings Source */
if (IsDlgButtonChecked(hwndDlg, ID_RB_PROXY_OPENVPN) == BST_CHECKED)
{
o.proxy_source = config;
proxy_source_string[0] = _T('0');
}
else if (IsDlgButtonChecked(hwndDlg, ID_RB_PROXY_MSIE) == BST_CHECKED)
{
o.proxy_source = windows;
proxy_source_string[0] = _T('1');
}
else if (IsDlgButtonChecked(hwndDlg, ID_RB_PROXY_MANUAL) == BST_CHECKED)
{
o.proxy_source = manual;
proxy_source_string[0] = _T('2');
}
/* Save Proxy type, address and port */
if (IsDlgButtonChecked(hwndDlg, ID_RB_PROXY_HTTP) == BST_CHECKED)
{
o.proxy_type = http;
proxy_type_string[0] = _T('0');
GetDlgItemText(hwndDlg, ID_EDT_PROXY_ADDRESS, o.proxy_http_address,
_tsizeof(o.proxy_http_address));
GetDlgItemText(hwndDlg, ID_EDT_PROXY_PORT, o.proxy_http_port,
_tsizeof(o.proxy_http_port));
}
else
{
o.proxy_type = socks;
proxy_type_string[0] = _T('1');
GetDlgItemText(hwndDlg, ID_EDT_PROXY_ADDRESS, o.proxy_socks_address,
_tsizeof(o.proxy_socks_address));
GetDlgItemText(hwndDlg, ID_EDT_PROXY_PORT, o.proxy_socks_port,
_tsizeof(o.proxy_socks_port));
}
/* Open Registry for writing */
if (RegCreateKeyEx(HKEY_CURRENT_USER, GUI_REGKEY_HKCU, 0, _T(""), REG_OPTION_NON_VOLATILE,
KEY_WRITE, NULL, &regkey, &dwDispos) != ERROR_SUCCESS)
{
/* error creating Registry-Key */
ShowLocalizedMsg(IDS_ERR_CREATE_REG_HKCU_KEY, GUI_REGKEY_HKCU);
return;
}
/* Save Settings to registry */
SetRegistryValue(regkey, _T("proxy_source"), proxy_source_string);
SetRegistryValue(regkey, _T("proxy_type"), proxy_type_string);
SetRegistryValue(regkey, _T("proxy_http_address"), o.proxy_http_address);
SetRegistryValue(regkey, _T("proxy_http_port"), o.proxy_http_port);
SetRegistryValue(regkey, _T("proxy_socks_address"), o.proxy_socks_address);
SetRegistryValue(regkey, _T("proxy_socks_port"), o.proxy_socks_port);
RegCloseKey(regkey);
}
void
GetProxyRegistrySettings()
{
LONG status;
HKEY regkey;
TCHAR proxy_source_string[2] = _T("0");
TCHAR proxy_type_string[2] = _T("0");
/* Open Registry for reading */
status = RegOpenKeyEx(HKEY_CURRENT_USER, GUI_REGKEY_HKCU, 0, KEY_READ, &regkey);
if (status != ERROR_SUCCESS)
return;
/* get registry settings */
GetRegistryValue(regkey, _T("proxy_http_address"), o.proxy_http_address, _tsizeof(o.proxy_http_address));
GetRegistryValue(regkey, _T("proxy_http_port"), o.proxy_http_port, _tsizeof(o.proxy_http_port));
GetRegistryValue(regkey, _T("proxy_socks_address"), o.proxy_socks_address, _tsizeof(o.proxy_socks_address));
GetRegistryValue(regkey, _T("proxy_socks_port"), o.proxy_socks_port, _tsizeof(o.proxy_socks_port));
GetRegistryValue(regkey, _T("proxy_source"), proxy_source_string, _tsizeof(proxy_source_string));
GetRegistryValue(regkey, _T("proxy_type"), proxy_type_string, _tsizeof(proxy_type_string));
if (proxy_source_string[0] == _T('0'))
{
o.proxy_source = config;
}
else if (proxy_source_string[0] == _T('1'))
{
o.proxy_source = windows;
}
else if (proxy_source_string[0] == _T('2'))
{
o.proxy_source = manual;
}
o.proxy_type = (proxy_type_string[0] == _T('0') ? http : socks);
RegCloseKey(regkey);
}
INT_PTR CALLBACK
ProxyAuthDialogFunc(HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM lParam)
{
connection_t *c;
TCHAR buf[50];
char cmd[70] = "username \"HTTP Proxy\" \"";
UINT username_len;
int length;
switch (msg)
{
case WM_INITDIALOG:
/* Set connection for this dialog */
SetProp(hwndDlg, cfgProp, (HANDLE) lParam);
SetForegroundWindow(hwndDlg);
break;
case WM_COMMAND:
switch (LOWORD(wParam))
{
case IDOK:
c = (connection_t *) GetProp(hwndDlg, cfgProp);
username_len = GetDlgItemText(hwndDlg, ID_EDT_PROXY_USER, buf, _tsizeof(buf));
if (username_len == 0)
return TRUE;
length = WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, buf, -1, cmd + 23, sizeof(cmd) - 23, "_", NULL);
memcpy(cmd + length + 22, "\"\0", 2);
ManagementCommand(c, cmd, NULL, regular);
memcpy(cmd, "password", 8);
GetDlgItemText(hwndDlg, ID_EDT_PROXY_PASS, buf, _tsizeof(buf));
length = WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, buf, -1, cmd + 23, sizeof(cmd) - 23, "_", NULL);
memcpy(cmd + length + 22, "\"\0", 2);
ManagementCommand(c, cmd, NULL, regular);
/* Clear buffers */
memset(buf, 'x', sizeof(buf));
buf[_tsizeof(buf) - 1] = _T('\0');
SetDlgItemText(hwndDlg, ID_EDT_PROXY_USER, buf);
SetDlgItemText(hwndDlg, ID_EDT_PROXY_PASS, buf);
EndDialog(hwndDlg, LOWORD(wParam));
return TRUE;
}
break;
case WM_CLOSE:
EndDialog(hwndDlg, LOWORD(wParam));
return TRUE;
case WM_NCDESTROY:
RemoveProp(hwndDlg, cfgProp);
break;
}
return FALSE;
}
/*
* Construct the proxy options to append to the cmd-line.
*/
void ConstructProxyCmdLine(TCHAR *proxy_string, unsigned int size)
{
if (o.proxy_source == manual)
{
if (o.proxy_type == http)
{
__sntprintf_0(proxy_string, size, _T(" --http-proxy %s %s auto"),
o.proxy_http_address, o.proxy_http_port);
}
else if (o.proxy_type == socks)
{
__sntprintf_0(proxy_string, size, _T(" --socks-proxy %s %s"),
o.proxy_socks_address, o.proxy_socks_port);
}
}
else if (o.proxy_source == windows)
{
__sntprintf_0(proxy_string, size, _T(" --auto-proxy"));
}
}